Provided are a novel aminoquinoline compound represented by Formula 1 or a pharmaceutically acceptable salt thereof, preparation method thereof, and a pharmaceutical composition for preventing or treating cutaneous cancer, comprising the aminoquinoline compound or pharmaceutically acceptable salt thereof. Since the compound of Formula 1 exhibits excellent anti-proliferative effect on melanoma tumor cells, it is useful for preventing or treating cutaneous cancer. wherein R1, R2, and R3 are defined in the specification.